T1090.001SubTechniquecommand-and-controlagent-callable

T1090.001Internal Proxy

Sub-technique of T1090

Platforms: Linux · macOS · Windows

ATT&CK version: 14.1

What it is

Adversaries may use an internal proxy to direct command and control traffic between two or more systems in a compromised environment. Many tools exist that enable traffic redirection through proxies or port redirection, including [HTRAN](https://attack.mitre.org/software/S0040), ZXProxy, and ZXPortMap. (Citation: Trend Micro APT Attack Tools) Adversaries use internal proxies to manage command and control communications inside a compromised environment, to reduce the number of simultaneous outbound network connections, to provide resiliency in the face of connection loss, or to ride over existing trusted communications paths between infected systems to avoid suspicion. Internal proxy connections may use common peer-to-peer (p2p) networking protocols, such as SMB, to better blend in with the environment. By using a compromised internal system as a proxy, adversaries may conceal the true destination of C2 traffic while reducing the need for numerous connections to external systems.

ATT&CK tactics· 1

Command And Control

References

  1. https://attack.mitre.org/techniques/T1090/001
  2. http://blog.trendmicro.com/trendlabs-security-intelligence/in-depth-look-apt-attack-tools-of-the-trade/
  3. https://arxiv.org/ftp/arxiv/papers/1408/1408.1136.pdf
Sourced from MITRE ATT&CK Enterprise v14.1. Curated and contextualized for EU compliance use cases by Adam Lundqvist, Founder at SQUR.
T1090.001: Internal Proxy | SQUR Knowledge Base